Transmissive can be defined as something that allows light or other forms of electromagnetic radiation to pass through it. There are several synonyms for this word that can be used in different contexts. One synonym for transmissive is transparent, which is often used to describe glass or plastic surfaces that allow light to pass through without obstruction. Another synonym is translucent, which describes materials that allow some light to pass through, but not enough to see objects clearly. Other synonyms for transmissive include light-permeable, diaphanous, and pervious. Each of these words can be used to describe a different aspect of the way that light or radiation is able to pass through certain materials or surfaces.